Congenital cystic lymphangioma - smoothly demarcated cyst of 15 x 12 x 7cm. On the section, the cyst is partly filled with brownish material. The wall of the cyst is smooth on the whole inside. Calcification in one site. Additional finding: Histology: Inner coating of the cyst by CD31 and D2-40-positive endothelium. Clinical symptoms: 35 year old female patient; large mediastinal cyst in the posterior mediastinum. DD: Bronchogenic cyst, teratoma.Source: ©PathoPic
